CN207737353U - A kind of cart skeleton and children trolley - Google Patents

Abstract

The utility model is related to be a kind of cart skeleton and children trolley, cart skeleton includes two hand handle push rods, hand handle push rod is connected with intermediate connector, intermediate connector is articulated with side handrail bar and lateral connector bar respectively, the lower end of side handrail bar is articulated with connecting joint, the lower end of connecting joint is articulated with front-wheel support bar, rear wheel support bar is articulated in the middle part of connecting joint, the lower end of lateral connector bar is pivotally connected with rear wheel support bar, arthrodia is slidably connected in the middle part of rear wheel support bar, arthrodial both sides are articulated with sliding cross bar and sliding vertical member respectively, the front end and front-wheel support bar for sliding cross bar are pivotally connected, the upper end of sliding vertical member is pivotally connected with lateral connector bar；Per vertical supporting bar is equipped between side connecting joint and other side arthrodia, the both ends of vertical supporting bar are flexibly connected with the connecting joint positioned at both sides, arthrodial medial surface respectively.For the technical program cart skeleton while length direction folds, width direction is also closing up folding, saves space, easy to operate.

Description

A kind of cart skeleton and children trolley

Technical field

The utility model is related to infant article technical fields, and in particular to be a kind of cart skeleton and children trolley.

Background technology

Most of children trolley currently on the market, can only do the folding of length direction, and volume after folding of returning the vehicle to the garage and knock off is bigger； A small number of carts can do width direction（Laterally）It folding, volume after folding is smaller, but after folding built on the sand, it is easy laterally to shake It is dynamic.The reason of above-mentioned second of cart, transverse shakiness, is caused by following 2 points：First, left and right handles pipe is between crossbeam It is rotation connection, cannot fixes；It is U-shaped whole that common cart, which does not have movable crossbeam, handle pipe, so laterally unapparent It shakes；Second, the pipe connected between handle pipe and forward and backward foot tube laterally has some shakings due to the gap of fit on. Under the collective effect of above-mentioned two factor, these shake the hand handle for reaching distal end, become significantly to shake, and cannot laterally bear Too big power.

Invention content

Utility model aims to solve children trolleys in the prior art to be only capable of being rolled in length or width direction Folded problem, improves a kind of cart skeleton that can be foldable in length, broadband direction, the cart framework shrinkage it is small and Using firm.

The another object of the utility model is, provides a kind of children trolley, which has multi-direction folding Skeleton.

To achieve the above object, the utility model provides the following technical solutions：

A kind of cart skeleton, includes two hand handle push rods positioned at both sides, and the lower end of hand handle push rod is connected with intermediate connection The both ends of part, intermediate connector are articulated with side handrail bar and lateral connector bar respectively, and the lower end of side handrail bar is articulated with connecting joint, The lower end of connecting joint is articulated with front-wheel support bar, and rear wheel support bar, the lower end of lateral connector bar are articulated in the middle part of connecting joint It is pivotally connected with the upper end of rear wheel support bar, arthrodia, arthrodial both sides point is slidably connected in the middle part of rear wheel support bar It is not articulated with sliding cross bar and sliding vertical member, the front end and front-wheel support bar for sliding cross bar are pivotally connected, the upper end and side of sliding vertical member Connecting rod is pivotally connected；Per side connecting joint and the arthrodia of the other side between be equipped with vertical supporting bar, the two of vertical supporting bar End is flexibly connected with the connecting joint positioned at both sides, arthrodial medial surface respectively.

Preferably, arthrodial middle part is equipped with lantern ring and forms the socket of clearance fit with rear wheel support bar, lantern ring Both sides extend outward connection sheet.

It being deformed as another kind, the side of rear wheel support bar is equipped with sliding slot, and arthrodia is equipped with the convex block coordinated with sliding slot, Convex block is inserted into sliding slot；Preferably, sliding slot, convex block are in dovetail shaped.

Preferably, the middle part of two vertical supporting bars is pivotally connected to be formed after be pivotally connected cross support bar.

Further, front-wheel support bar is articulated with foot pedal, is equipped between the foot pedals of both sides, connecting joint and is set in pivot joint The both ends of the preceding cross support bar set, preceding cross support bar side are pivotally connected with the foot pedal of the same side, connecting joint respectively, and preceding ten The both ends of the word supporting rod other side are pivotally connected with the foot pedal of another the same side, connecting joint respectively.

Further, the vertical cross support bar in pivot joint setting, vertical cross-shaped are equipped between the sliding vertical member of both sides The both ends of strut side are pivotally connected with the both ends of wherein one sliding vertical member respectively, the both ends difference of the vertical cross support bar other side It is pivotally connected with the both ends of another sliding vertical member, wherein vertical cross support bar includes two supporting rods of pivot joint, and supporting rod includes The support chip of two panels pivot joint.

Further, the hand handle push rod of both sides is respectively connected with crossbeam, two crossbeam pivot joints.

Further, the intermediate connector is equipped with the locking structure for lock side bar, when side handrail bar is locked Periodically, side handrail bar is relatively fixed with intermediate connector；When side handrail bar is unlocked, side handrail bar can phase with intermediate connector To rotation.

Further, the upper end of hand handle push rod is equipped with the control assembly for controlling unlock locking structure, and the hand handle pushes away Bar, crossbeam are in hollow setting, are formed inside crossbeam in shifting chute and shifting chute and are equipped with sliding limited block, slide the one of limited block End is stretched out shifting chute and is stretched into hand handle push rod；The upper end of hand handle push rod is plugged with button block, button block or/and sliding limited block Equipped with the inclined-plane inwardly pushed away for limited block will to be slided；It is additionally provided with drawing in hand handle push rod sliding block, draws and sliding block is located at sliding limit The lower section of position block, the flexible connection of hand handle push rod are useful for returning the vehicle to the garage and knock off for control unlock and draw handle, drawing of returning the vehicle to the garage and knock off being connected with drawing limited block, It draws and moving hole is inserted into one end of limited block.

Preferably, it is equipped in hand handle push rod and is respectively used to button block and draws the elastic component that sliding block is resetted；More preferably, The elastic component for sliding limit block reset is equipped in crossbeam.

A kind of children trolley has the above cart skeleton.

The advantageous effect of the technical program, the technical program are vertical by being arranged on the connecting joint of both sides, arthrodia To supporting rod so that for cart skeleton while length direction folds, width direction is also closing up folding, saves space, operation It is convenient.

Description of the drawings

Fig. 1 is a kind of stereoscopic schematic diagram of the present embodiment cart skeleton.

Fig. 2 is a kind of side view of Fig. 1.

Fig. 3 is a kind of stereoscopic schematic diagram that Fig. 1 hides upper part.

Fig. 4 is another visual angle schematic diagram of Fig. 3.

Fig. 5 is a kind of schematic diagram of cart skeleton semi-collapsed condition.

Fig. 6 is a kind of stereoscopic schematic diagram of Fig. 5.

Fig. 7 is a kind of schematic diagram that cart estimates full folded state.

Fig. 8 is another visual angle schematic diagram of Fig. 7.

Fig. 9 is a kind of stereoscopic schematic diagram of Fig. 7.

Figure 10 is the cooperation decomposition diagram of crossbeam and hand handle push rod.

Figure 11 is a kind of partial schematic sectional view of Figure 10.

Reference numeral：

1 --- hand handle push rod；2 --- lateral connector bar；3 --- side handrail bar；4 --- sliding vertical member；5 --- rear wheel support Bar；6 --- front-wheel support bar；7 --- sliding cross bar；8 --- mounting bar；9 --- crossbeam；10 --- preceding armrest seat；11—— Preceding armrest seat connecting rod；12 --- vertical supporting bar；13 --- front support rod；14 --- foot pedal；15 --- support chip；16—— Support chip；17 --- button block；18 --- it returns the vehicle to the garage and knock off and draws handle；19 --- it draws sliding block；20 --- arthrodia；21 --- connection is closed Section；101 --- moving hole；9-1 --- sliding limited block；20-1 --- U-shaped piece fixed frame 30 --- intermediate connector.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work The every other embodiment obtained, shall fall within the protection scope of the present invention.

Referring to Fig. 1 to Figure 11, a kind of cart skeleton includes two hand handle push rods 1 positioned at both sides, under hand handle push rod 1 End is connected with intermediate connector 30, and the both ends of intermediate connector 30 are articulated with side handrail bar 3 and lateral connector bar 2, side handrail respectively The lower end of bar 3 is articulated with connecting joint 21, and the lower end of connecting joint 21 is articulated with front-wheel support bar 6, the middle part of connecting joint 21 It is articulated with rear wheel support bar 5, the lower end of lateral connector bar 2 is pivotally connected with the upper end of rear wheel support bar 5, the middle part of rear wheel support bar 5 Arthrodia 20 is slidably connected, the both sides of arthrodia 20 are articulated with sliding cross bar 7 and sliding vertical member 4, slide cross bar 7 respectively Front end and front-wheel support bar 6 be pivotally connected, upper end and the lateral connector bar 2 of sliding vertical member 4 are pivotally connected；Per side connecting joint 21 with it is another Be equipped with vertical supporting bar 12 between the arthrodia 20 of side, the both ends of vertical supporting bar 12 respectively with the connecting joint positioned at both sides 21, the medial surface flexible connection of arthrodia 20.

The cart skeleton of the technical program can be folded in length direction and width direction, specially：Hand handle push rod 1 is logical Crossing intermediate connector 30 drives the upper end of side handrail bar 3 and lateral connector bar 2 to move downward, side handrail bar 3 along with connecting joint 21 drive-connecting shaft rotation, lateral connector bar 2 along with the rotation of the drive-connecting shaft of rear wheel support bar 5, lateral connector bar 2 in rotary course, Since the upper end of sliding vertical member 4 is connect with lateral connector bar 2, the upper end of sliding vertical member 4 is done arc and is moved downward, sliding vertical member 4 lower end will push arthrodia 20 forward, move downward, arthrodia 20 is moved down along rear wheel support bar 5, simultaneously By the lower end of rear wheel support bar 5 to being pushed forward, and arthrodia 20 drives the rear end of sliding cross bar 7 to move down, sliding cross bar 7 Front end drives front-wheel support bar 6 along the drive-connecting shaft back rotation with connecting joint 21, rear wheel support bar 5 and front-wheel support bar 6 And lateral connector bar 2, side handrail bar 3 gradually collapse, the contraction of formation length.In the direction of the width, when arthrodia 20 along When rear wheel support bar 5 moves down, 12 end of vertical supporting bar being flexibly connected with arthrodia 20 also moves down, Zong Xiangzhi Strut 12 is gradually decreased in the length of width direction so that two side stands gradually close up, to complete the gathering of width direction.

Due to there is the movement of multiple components in the contraction process of the technical program, two opposite fortune wherein is only needed Locking mechanism is set between dynamic component, stroller frame can be kept to be located at opening state.Such as in hand handle push rod 1 and side handrail Locking mechanism is set between bar 3 or hand handle push rod 1 and lateral connector bar 2；Or it is arranged between arthrodia 20 and rear wheel support bar 5 Locking mechanism.Secondly, the pivot joint of two components in the technical program can be that the two is directly pivotally connected by the way that drive-connecting shaft is arranged, such as two A component stagger setting, setting coaxial aperture are placed on pivot joint axis connection or a component outside another component again, and coaxial aperture is arranged Again with pivot joint axis connection.Connection sheet, U-shaped can also then be passed through by the way that connection sheet or U-shaped piece etc. are arranged on one of component Piece is arranged drive-connecting shaft and is pivotally connected again with another component.Such as, the medial surface of arthrodia 20 is both provided with U-shaped piece fixed frame 20-1, and It is hinged with vertical supporting bar 12 by the U-shaped piece on U-shaped piece fixed frame 20-1.

The both ends of vertical supporting bar 12 can respectively with connecting joint 21, arthrodia 20 positioned at both sides medial surface pivot It connects, connection structure may be other revolute pairs, revolute, such as：The end of longitudinally connected bar 12 is spherical in shape, connector joint 21, the medial surface of arthrodia 20 is equipped with spherical pore.When pivot joint, the medial surface fixation of connecting joint 21, arthrodia 20 connects It is connected to U-shaped piece, U-shaped piece is connected with drive-connecting shaft and is pivotally connected by drive-connecting shaft and vertical supporting bar 12.

Preferably, the middle part of arthrodia 20 is equipped with lantern ring and forms the socket of clearance fit, lantern ring with rear wheel support bar 5 Both sides extend outward connection sheet.

It is deformed as another kind, the side of rear wheel support bar 5 is equipped with sliding slot, and arthrodia 20 is convex equipped with coordinating with sliding slot Block, convex block are inserted into sliding slot；Preferably, sliding slot, convex block are in dovetail shaped.

Connecting joint 21 in the technical program, including U-shaped shell, three end set drive-connecting shafts of shell, shell are excellent Selection of land is triangular in shape.Certainly, triangle harden structure, three end set drive-connecting shafts of set square may be used in connecting joint 21.

Preferably, the middle part of two vertical supporting bars 12 is pivotally connected to be formed after be pivotally connected cross support bar.

Two vertical supporting bars 12 are pivotally connected so that two vertical supporting bars 12 can keep synchronous in moving process, Keep the stability of width direction.

Further, front-wheel support bar 6 is articulated with foot pedal 14, is equipped between the foot pedals 14 of both sides, connecting joint 21 In the preceding cross support bar of pivot joint setting, the both ends of preceding cross support bar side respectively with the foot pedal of the same side 14, connect pass The both ends of 21 pivot joint of section, the preceding cross support bar other side are pivotally connected with the foot pedal of another the same side 14, connecting joint 21 respectively.

The cooperation of preceding cross support bar and foot pedal 14 connects the front wheel supporting bar of both sides, and stabilized structure avoids Two front wheel supporting bars are excessively loosely organized；Next is also provided with foot pedal 14, with easy to use.Preceding cross support bar includes pivot joint Two front support rods 13 being arranged.

Further, the vertical cross support bar in pivot joint setting, vertical cross-shaped are equipped between the sliding vertical member 4 of both sides The both ends of strut side are pivotally connected with the both ends of wherein one sliding vertical member 4 respectively, the both ends point of the vertical cross support bar other side It is not pivotally connected with the both ends of another sliding vertical member 4, wherein vertical cross support bar includes two supporting rods of pivot joint, supporting rod Include the support chip 15,16 of two panels pivot joint.

Vertical cross support bar is set on the sliding vertical member 4 of both sides so that the rear structure of cart is firm.

Further, the hand handle push rod 1 of both sides is respectively connected with crossbeam 9, and two crossbeams 9 are pivotally connected.

Crossbeam 9 is set between hand handle push rod 1, both sides push rod is connected, the stable structure of push rod is contributed to.This skill In art scheme, the inner end of two crossbeams 9 is respectively equipped with annulus, two annulus pivot joints.

Further, the intermediate connector 30 is equipped with the locking structure for lock side bar 3, when side handrail bar 3 When locked, side handrail bar 3 is relatively fixed with intermediate connector 30；When side handrail bar 3 is unlocked, side handrail bar 3 and centre Connector 30 can relative rotation.

The technical program on intermediate connector 30 by being arranged locking structure, to realize the unfolded state lock of cart It is fixed.Locking structure can be：Intermediate connector 30 is equipped with movable hook, and movable hook can be rotated relative to intermediate connector 30, side Bar 3 is equipped with the card hole that coordinate with movable hook, and movable hook is clamped and card hole, as shown in Figure 5, Figure 6, side handrail bar 3 to It is extended with hook part outside, hook part is formed with card hole.Movable hook can be connect by torsional spring with intermediate connector 30.

Further, the upper end of hand handle push rod 1 is equipped with the control assembly for controlling unlock locking structure, and the hand handle pushes away Bar 1, crossbeam 9 are in hollow setting, and 9 inside of crossbeam, which is formed in shifting chute and shifting chute, is equipped with sliding limited block 9-1, sliding limit One end of block 9-1 is stretched out shifting chute and is stretched into hand handle push rod 1；The upper end of hand handle push rod 1 is plugged with button block 17, button block 17 Or/and sliding limited block 9-1 is equipped with for that will slide the inclined-plane that limited block 9-1 is inwardly pushed away；Drawing is additionally provided in hand handle push rod 1 sliding Block 19 draws the lower section for sliding block 19 being located at sliding limited block 9-1, and hand handle push rod 1, which is flexibly connected, is useful for returning the vehicle to the garage and knock off for control unlock It draws 18, drawing of returning the vehicle to the garage and knock off is connected with drawing limited block 18, and the present embodiment is specially：It returns the vehicle to the garage and knock off and the side 18 is drawn to be equipped with connecting hole, The side of hand handle push rod 1 is equipped with moving hole 101, and connecting hole is connected with drawing limited block, draws and movement is inserted into one end of limited block Hole.

When cart is unfolded, one end of sliding limited block 9-1 is located at button block 17 and draws between sliding block 19, draws sliding block 19 offset with sliding limited block 9-1, draw and limited block offset sliding block 19 with drawing immovable, returning the vehicle to the garage and knock off to draw is limited 18；When When cart collapses, button block 17 presses down on, and button block 17 abuts and inside by limited block 9-1 is slided with sliding limited block 9-1 It pushes away so that sliding limited block 9-1 leaves inside hand handle push rod 1, at this time can be by pushing up drawing of returning the vehicle to the garage and knock off 18, and drawing of returning the vehicle to the garage and knock off is 18 With drawing limited block and push drawing sliding block 19 and button block 17 moved up, returning the vehicle to the garage and knock off to draw moves up 18 and can control Locking structure unlock processed.Drawing of such as returning the vehicle to the garage and knock off is connect by drawstring with locking structure 18, and drawing of returning the vehicle to the garage and knock off is moved up 18, opens locking The latch hook of structure；Or drawing of returning the vehicle to the garage and knock off is connect by transmission mechanism with locking structure 18, driving locking structure unlock.

When implementing, the interior groove of crossbeam 9 may be configured as outside and tilts down state the technical program, when from the state of returning the vehicle to the garage and knock off When to opening state, drawing of returning the vehicle to the garage and knock off is resetted 18, and drawing under gravity can also reset sliding block 19, and button block 17 can pass through extraneous people The operation of hand resets, and drawing detaches sliding block 19 with button block 17, and sliding limited block 9-1 can under gravity be resetted along interior groove. Preferably, the matched lower inclined plane in the lower end upper surface of sliding block 19 being equipped with button block 17 is drawn.

Preferably, it is equipped in hand handle push rod 1 for button block 17 or/and draws the elastic component that sliding block 19 is resetted；Further preferably Ground, crossbeam 9 is interior to be equipped with the elastic component resetted for sliding limited block 9-1.

The state of reset is subject to the unfolded state of cart.In design, sliding limited block 9-1 is equipped with to live the technical program Dynamic slot, crossbeam 9 are connected with the limited post for limit slippage limited block 9-1 movings range；Button block 17 is drawn in sliding block 19 Portion is equipped with mounting groove, is installed in mounting groove, and hand handle push rod 1 is connected with the locating part for being inserted into mounting groove, locating part and elasticity Part is offseted or is connected, and locating part can be bolt etc., and when sliding block 19 is moved in button block 17, drawing, locating part is motionless and changes The shape of locating part.Elastic component can be spring, elastic wire etc..

Further, the preceding armrest seat 10 of arc-shaped setting is connected between the side handrail bar 3 of both sides, sliding vertical member 4 Upper end is pivotally connected by preceding armrest seat connecting rod 11 and preceding armrest seat 10, and the middle part of preceding armrest seat 10 is equipped with the arc that multistage is pivotally connected successively Section.

The setting of preceding armrest seat 10, convenient for cart in use, children are hand steered.Preceding armrest seat 10 is in folding process, arc Duan Yici is folded.

Further, the lower end of side handrail bar 3 is connected with mounting bar 8, and rear end and the sliding vertical member 4 of mounting bar 8 are pivotally connected.

Mounting bar 8 is set in order to mounting body.

A kind of children trolley, including above-mentioned cart skeleton.

It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this practicality is new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing in the equivalent requirements of the claims will be fallen All changes in justice and range are embraced therein.Any reference numeral in claim should not be considered as limitation Involved claim.

Claims (10)

1. a kind of cart skeleton includes two hand handle push rods positioned at both sides, it is characterised in that：The lower end of hand handle push rod is connected with The both ends of intermediate connector, intermediate connector are articulated with side handrail bar and lateral connector bar respectively, and the lower end of side handrail bar is articulated with The lower end of connecting joint, connecting joint is articulated with front-wheel support bar, and rear wheel support bar, side connection are articulated in the middle part of connecting joint The lower end of bar is pivotally connected with the upper end of rear wheel support bar, and arthrodia, arthrodia are slidably connected in the middle part of rear wheel support bar Both sides be articulated with sliding cross bar and sliding vertical member respectively, the front end and front-wheel support bar for sliding cross bar are pivotally connected, sliding vertical member Upper end is pivotally connected with lateral connector bar；Vertical supporting bar, Zong Xiangzhi are equipped between connecting joint and the arthrodia of the other side per side The both ends of strut are flexibly connected with the connecting joint positioned at both sides, arthrodial medial surface respectively.

2. a kind of cart skeleton according to claim 1, it is characterised in that：Arthrodial middle part be equipped with lantern ring and with it is rear Wheel support bar forms the socket of clearance fit, and the both sides of lantern ring extend outward connection sheet.

3. a kind of cart skeleton according to claim 1, it is characterised in that：Front-wheel support bar is articulated with foot pedal, both sides Foot pedal, preceding cross support bar in pivot joint setting, the both ends difference of preceding cross support bar side are equipped between connecting joint Be pivotally connected with the foot pedal of the same side, connecting joint, the both ends of the preceding cross support bar other side respectively with the foot pedal of another the same side, Connecting joint is pivotally connected.

4. a kind of cart skeleton according to claim 1, it is characterised in that：It is equipped in pivot joint between the sliding vertical member of both sides The vertical cross support bar being arranged, the both ends of the vertical cross support bar side both ends pivot with wherein one sliding vertical member respectively It connects, the both ends of the vertical cross support bar other side are pivotally connected with the both ends of another sliding vertical member respectively, wherein vertical cross hang Bar includes two supporting rods of pivot joint, and supporting rod includes the support chip of two panels pivot joint.

5. a kind of cart skeleton according to claim 1 or 2 or 3 or 4, it is characterised in that：The hand handle push rod of both sides connects It is connected to crossbeam, two crossbeam pivot joints.

6. a kind of cart skeleton according to claim 5, it is characterised in that：The intermediate connector, which is equipped with, is used for lock side The locking structure of bar, when side handrail bar is locked, side handrail bar is relatively fixed with intermediate connector；When side handrail bar quilt When unlock, side handrail bar can relative rotation with intermediate connector.

7. a kind of cart skeleton according to claim 6, it is characterised in that：The upper end of hand handle push rod is equipped with for controlling solution The control assembly of locking structure is locked, the hand handle push rod, crossbeam are in hollow setting, and shifting chute and shifting chute are formed inside crossbeam Interior to be equipped with sliding limited block, the one end for sliding limited block is stretched out shifting chute and is stretched into hand handle push rod；It inserts the upper end of hand handle push rod It is connected to button block, button block or/and sliding limited block are equipped with for that will slide the inclined-plane that limited block inwardly pushes away；In hand handle push rod also Sliding block is drawn the lower section for sliding block being located at sliding limited block, the flexible connection of hand handle push rod are useful for the receipts of control unlock equipped with drawing Vehicle draws handle, and drawing of returning the vehicle to the garage and knock off draws and moving hole is inserted into one end of limited block drawing is connected with limited block.

8. a kind of cart skeleton according to claim 7, it is characterised in that：It is equipped in hand handle push rod and is respectively used to button block And draw the elastic component that sliding block is resetted.

9. a kind of cart skeleton according to claim 8, it is characterised in that：It is equipped in crossbeam for sliding limit block reset Elastic component.

10. a kind of children trolley, it is characterised in that：With any cart skeleton of claim 1 to 9.